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geology german rag ruhr seam hard coal thickness depth

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Dictionary.com's List of Every Word of the Year

A list of every Word of the Year selection released by Dictionary.com. Dictionary.com's first Word of the Year was chosen in 2010.

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Le Live Marseille : aller dans les plus grandes soirées

Retrouvez toutes les discothèque Marseille et se retrouver dans les plus grandes soirées en discothèque à Marseille.

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Coal mining - Wikipedia

Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.

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